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"Typical sharks", such as requiem sharks, have tails with the upper lobe longer than the lower. The upper lobe is turned upwards at a moderate angle relative to the body, which balances cruising efficiency with turning ability. The thresher sharks have an extreme example of this tail in which the upper lobe has evolved into a weapon for ...
The Atlantic sharpnose shark's maximum species length is known to be about 110–120 cm (3.6–3.9 ft). Although its average adult size tends to be about 91.4–99 cm (3.00–3.25 ft). Reports exist of these sharks living up to 19 years in the wild. [2] A distinctive feature is that juveniles have black edges on the dorsal and caudal fins. [3]
The Pennsylvania Wilds, or the Pennsylvania Wilds Conservation Landscape, is a predominantly rural and forested region in northern central Pennsylvania, mostly within the Allegheny Plateau. It covers about a quarter of the state's territory, but is home to only 4% of its population. It is one of Pennsylvania's 11 state-designated tourist regions.
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In the northwestern Atlantic, the bignose shark conducts a poorly documented seasonal migration, spending summer off the US East Coast and winter in the Gulf of Mexico and the Caribbean Sea. Individual sharks have been recorded traveling distances between 1,600 and 3,200 km (1,000 and 2,000 mi).
The bonnethead (Sphyrna tiburo), also called a bonnet shark or shovelhead, [3] is a small member of the hammerhead shark genus Sphyrna, and part of the family Sphyrnidae.It is an abundant species in the littoral zone of the North Atlantic and the Gulf of Mexico, is the only shark species known to display sexual dimorphism in the morphology of the head, and is the only shark species known to be ...
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In the winter, the sharks scavenge on market squid (Loligo opalescens), which die by the tens of thousands after their mass spawning event. [3] [6] Horn sharks hunt mainly using their sense of smell. [4] Although electroreception certainly plays a role in locating prey, this species has only 148 ampullae of Lorenzini.